From: William James <w_a_x_man@...>
Date: 2008-01-23T16:30:01+09:00
Subject: Re: How to improve this code?

On Jan 22, 7:05 pm, Jair Rillo Junior <jrjunio...@yahoo.com.br> wrote:
> Hi guys,
> I am new in the Ruby world, I am coming from Java, and I would like to
> "think " in Ruby instead Java.
>
> I did a code to read a CSV file (separated by comma), organize the
> values and print the output.
>
> Basically the CSV looks like this:
> b...@bla.com,value1
> b...@bla.com,value2
> b...@bla.com,value3
> b...@bla.com,value4
> r...@ruby.br,value1
> r...@ruby.br,value2
>
> the output should be in two lines
> b...@bla.com,value1,value2,value3,value4
> r...@ruby.br,value1,value

awk -F, "{a[$1]=a[$1] FS $2} END{for(k in a)print k a[k]}" file